<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root">
        <my-hello></my-hello>
        <my-hello/>
    </div>
    <script src="../js/vue.js"></script>
    <script>
        new Vue({
            el: '#root',
            components:{
                MyHello: {
                    data: function(){
                        return {
                            text: 'hello'
                        }
                    },
                    methods:{
                        reverse(){
                            this.text = this.text + '!';
                        }
                    },
                    template: `<div>
                        <h1>{{text}}</h1>
                        <button @click="reverse">!</button>
                    </div>`,
                },
              
            }
        })
    </script>
</body>
</html>